ntel has revealed a new open source image denoiser called Open Image Denoise which is available under an Apache 2.0 license. It is said to feature several “high-performance, high-quality denoising filters for images rendered with ray tracing.”
https://80.lv/articles/new-open-source-denoiser-by-intel/?fbclid=IwAR1axCASkx9brvbsM-UM7VhXSFUmZSqqw6eiXeb6OSFfDX9jyAhmglfkYF8